Am I losing my mind? Help...?

I have been nervous, and found it super hard to focus. I am afraid my mind will take charge, and I will no longer be able to control my thoughts at all. I also feel like people's voices feel louder when I am nervous, and my hears literally hurt and I feel nauseated and become unfocused. I am afraid to lose my mind, and develop psychosis. Does it sound like I am on my way, or can everything be accounted for by anxiety or stress? I also find I am more forgetful. I also literally felt sick to my stomach and lightheaded when I read about the articles pertaining to Wikileaks. Thanks